To be honest diesel is not really a priority for us – our main markets such as China, the US and the Middle East don’t care about diesel, it’s only really popular in Europe and not even the whole of Europe. Russia for example isn’t interested.

It might actually be too late for diesel now, plug-in hybrids offer an even better fuel economy and don’t alienate petrol-only markets, we won’t see them for the next three years, but for us a plug-in hybrid is a must.